Trees were planted on ______ sides of the new road last year. These trees flowered this year for the first time.
It’s time for supper now. Let’sit.
----______have you been learning to swim ? ----Half a year.
----_______ did you start studying English ? -----Five years ago.
The room was dark, _______ I turned on the lights.
---Mike hurt his leg while playing football yesterday.? --- _______ .